Fastener



S. WEISS FASTENER Filed May 2, 1945- v glvwe/wto o SAUL. VVEEE,

6: KW (em Patented Nov. 8, 1949 UNITED STATES .EPATENT OFFICE (Grantedunder the act of March 3, 1883, as amended April 30, 1928; 370 0. G.757) The invention described herein may be manufactured and used by orfor the Government for governmental purposes without the payment to meof any royalty thereon.

This invention relates to an improved quickly detachable fastener foruse in lieu of a nut and bolt or other similar fastener for connecting aplurality of elements.

A special object of the invention is to provide a fastener capable ofbeing quickly detached without the use of any special tool.

Another object of the invention is to provide a fastener which will notbecome accidentally disengaged by being subjected to vibration or othermovement.

Other objects and advantages of the invention will hereinafter becomemore fully apparent from the following description of the drawing, whichillustrates preferred embodiments thereof, and wherein;

Figure l is a side elevation view partly in longitudinal section showingthe fastener assembled and applied;

Figure 2 is a cross sectional view of the fastener taken substantiallyalong a plane as indicated by the line 22 of Figure 1;

Figure 3 is a longitudinal sectional view partly in elevation of aportion of the fastener; and

Figure 4 is a perspective view of a slightly modified form of oneelement of the fastener.

Referring more particularly to the drawing, wherein like referencecharacters designate like or corresponding parts throughout the severalviews, 5 designates generally the improved fastener in its entirety andwhich includes a pin or bolt 5 having a head I at one end thereof. Thepin 6 is provided with a longitudinal bore 8 which opens outwardly ofits opposite, shank end. The shank end of the pin 6 is provided withintegral inwardly flared lips 9 which restrict the open end of the bore8.

A plunger I0 is slidably disposed in the bore 8 and is provided with arestricted outer end ll sized to slidably pass through the restrictedmouth of the bore 8. The body portion of the plunger H] is of sufficientsize to be restricted from passage through the restricted mouth of thebore 8 to limit the outward movement thereof to a position as seen inFigures 1 and 3. An expansion spring i2 is mounted between the inner endof the bore 8 and the plunger ID for biasing the plunger outwardly. Thespring 8 and plunger III are assembled in the bore 8 by being placedtherein before the lips S are formed to restrict the mouth of the bore8.

The pin 6, adjacent its shank end, is provided with an annular outwardlyopening groove or channel [3. A retaining member, designated generally14, includes a disk or plate portion 15 which is adapted to bear againstthe shank end of the pin 6 and which is provided with an opening It toreceive the restricted plunger end II. The retaining member [4 isprovided with an arcuately shaped portion H which is formed integralwith the disk l5 and which is disposed at substantially a right anglethereto and extends from a portion of the outer edge thereof. Theportion ll carries an integral inturned flange I8 having a recess [9which opens outwardly of one end thereof and which includes an arcuatelyshaped intermediate portion and substantially parallel end portions, asseen in Figure 2, the space between which is slightly greater than thediameter of the pin 6 as measured across its groove l3.

From the foregoing it will be readily apparent that the retaining member14 can be applied to the shank end of the pin 6, when the plunger it! isretracted into the bore 8, by diametric or lateral movement relativelythereto to engage the inturned flange l8 with the groove l3, the lateralportion IT with a part of the periphery of the pin 6, and the disk l5with the shank end of the pin 6. The plunger I!) is then released andprojected outwardly of the bore 8 by the spring 42 to cause the plungerportion H to engage the opening IE to retain the element [4 againstdiametric or lateral movement relatively to the pin 6. Thus, the grooveI 3 and the inturned portion 18 prevent longitudinal displacement of theretaining element It and the plunger portion H prevents lateral ordiametrical displacement thereof to effectively retain the element M onthe pin 6. Obviously, the element [4 can be readily removed by forcingthe plunger Ill inwardly of the bore 8 against the spring IE to releaseelement [4 to permit it to be removed laterally or diametrically fromthe pin 6.

As seen in Figure 2, the portion I1 and the inturned portion 18 extendaround a part of the disk !5 greater than a half thereof, so that theportion 28 is of substantially yoke shaped construetion. If desired, andas illustrated in Figure 4, the retaining member could be modified byproviding a portion Ha in lieu of the portion l1 and which issubstantially semicircular, and a portion I8a, in lieu of the portion l8and which is likewise semicircular, to thus form a slightly modifiedretaining element, designated generally I ia. In the retaining elementMa the disk portion I5 thereof is not modified.

In the Figures 1 and 3 two members 20 and 2|, provided with alignedopenings 22, are connected by the fastener 5. The shank portion of thepin 5 6 extends through the aligned openings 22 and the head (bearsagainstthe exposed facegof the member 21.2 The free edge of the; portionl1 bears against the exposed face of the element 20 to tively securingthe members 20 and 2! together and on the shank of the pin 6.

Various other modifications and changes aige contemplated and mayobviouslybe resqr to the invention as hereinafter defined by the. apz-gpended claims, as only preferred embodiments of the fastener have beendisclosed. ;.1

I claim:

bore opening through oneend thereof, a plunger slidab'ledn saidb'ore;spring-means urging said plunger axially outwardly in saidbore,means limiting saidpl-unger in-- outward movement 1so bo re,-there--being a circumferential channel in 7 said adjacent said one end,a disk having a central; opening to receive said plunger and a laterallyand inwardlyturned semicircular flange adapted-to be seated in saidchannel only by a mei ement radially of said pin 'when said plunger isforced within said bore, said. plunger when released entering saidcentral opening to thereby 1o'ck -saicldisk imposition on said pin.

2: Aafastener -comprising a headed pin having T a circumferential,channel adiacentthe end re-. mote from the head thereof,,retractablemeans projectin coaxially from said end,. anda retain-ecircular, laterally andinward-1y. turnedi flange concentric of said holesaiclflange being adapted toengage .in ;-sa idchannel bymovement--inaeradial direction only'relatively to said-pin when saidretractable;means;isgwithin; saidrpin, and 45 means urging saidretractable means outwardly, said retractable means engaging the hole ofsaid retaining element to lock said element in position on said pin.

3. A fastener comprising a pin having a central bore opening through oneend thereof and a circumferentiallyeextending' channel adjacent said oneend,.a plunger slidablev-in said bore and having a reduced outer end,means yieldingly urging thereby cooperate with the head 1 for effecegwjsaid plunger to movement outwardly of said bore,

means limiting said movement from a first position in which said plungeris confined within saidgbflregztoaa second position in which said rep 7ducedgendpnly projects from said bore, a disk without departing from thespirit--and-scope-of '15having'a centralaperture, and a semi-circularinwardly extending flange concentric of said aperture and adapted to bemoved radially to seat'in said;channel when said plunger is in firstposition;- said plunger when in second position In a f t e pinhaving acentral axial 20 having its reduced end fitting said aperture tothereby-lock said disk on said pin. I

4. Ina-fastenena pin havinga central bore opening through oneen-d and achannel extendingcircumferentially closely adjacent but .v spacedthatonly-aportion'thereof projects from said Q central-hole and-*- a:semi-circular radially inturned" flange: adapted -'to seat" in saidchannel when: said di'sk is slid radially across said one end 'of saidpin, a"

plunger slidably fitting-said bore and having an \end-- adapted-to'fit'said hole-when said flange isseated in said channel, and means-=urging said plunger axially outwardlyof said b'ore' to thereby looksaidpin and disk- 'togethenwhen the latter is seated as aforesaid;

SAUL WEISS! REEERE'NGES" 5 CITED The following references are of recordin theg ing element having a central hole and ,a semi muflrevofthlspatent:

Number FOR-1571ff N--- PATENTS Country Date Holland Dec.,15, 1938 FranceSept. 2', 1932,

